Aquarium Care

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Posts Tagged ‘Biological Filter’

How To Filter Out Your Fish Tank

Sunday, November 29th, 2009

It must make any aquarium enthusiast cringe, having to feed his fish every day in the same water that they swim in, breathe in and release their bodily wastes in. If it were not for reasons of yuckiness that that such a situation could not be allowed, it would certainly be objectionable for the way this would poison the water and make it incapable of sustaining aquatic life. How do you treat your fish to a better life then? If the fish lived in a natural water body, a pond or stream, there would be enough clean water in the system that all the bodily waste would not make a difference; in a closed water body like an aquarium, it comes down to the owner of the aquarium to do something to constantly clean and freshen the water the fish live in, to give them a reasonable standard of living. Aquarium filters are the answer; though there are so many, they can hardly be called one answer.

The empathetic aquarium owner must worry most about the health implications of having his fish swimming around in a weak solution of their own bodily waste. What must all the bacteria and other pathogens in the water do to the fish? Do their eyes sting; do they breathe with difficulty in such a toxic water cocktail? Biological aquarium filters are the solution to such concerns. A biological filter is a unit that encourages the growth of beneficial bacteria inside it. These bacteria subsist on the bodily waste of fish; and they break down the poisonous ammonia in the waste into nitrogen compounds, nitrites and nitrates and these are a great way to take the sting out of the problem.

Under-gravel filters are a great example of biological aquarium filters; they’re not marketed as effectively these days, owing to the fact that they are simple to build, and offer no opportunity for a killer markup, but are very effective. The idea is that the filter is placed under the bed of the aquarium; water is drawn through the gravel over the bed; the gravel filters out a large part of the suspended debris, and the bacteria that live in the gravel take care of the ammonia. The water is drawn down and sent back up after purification by message of an air stone or a powerhead.

One of the best options that modern aquarium filter technology provides is the canister filter. Canister aquarium filters force the water in an aquarium through a variety of filters and cycle the entire contents of an aquarium every hour. The result is a visibly bright and clean and aquarium that manages to be free of most kinds of impurities. A minor drawback to this type of aquarium filter is the way it keeps drawing all the water through its system constantly; this action creates quite a strong current in the tank that can be annoying to some fish.

One of the most satisfying kinds of aquarium filter to use is the sump variety. Basically a sump aquarium filter is a large aquarium-like tank by itself, used exclusively for water purification in the main tank. The sump is sectioned off into three or four areas, each one installed with a different kind of water purification system. These aquarium filters are mostly the domain of experienced do-it-yourselfers; you could have a sump with a compartment for beneficial plants, one for gravel and charcoal purification, and so on. It is easy to be bitten by the purification bug and let it run away with you though. The final test of how successful your attempts are, rests in the health of your fish population. If your veterinarian certifies them to be as healthy as can be, there’s no reason why you should not congratulate yourself on a job well done.

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How to Cycle an Aquarium

Thursday, April 9th, 2009

aquariumcycleDid you ever think you couldn’t have fish because “they just die”? If all your fish die within a week of buying them, it’s not just the fish. The most common cause of mass fish deaths is an improperly cycled tank. Before you buy any fish, it’s absolutely imperative to make sure your aquarium is well-cycled.

What is cycling? Simply put, the cycling process is the time it takes to set up a biological filter for the nitrogen cycle to function inside the aquarium. Your aquarium is much more than a tank full of water, it has to be an entire contained eco-system to keep your fish healthy. The goal with your cycling time is to develop a culture of beneficial bacteria (or “bio-bugs”) that will break down the ammonia from the fish’s waste into nitrites, and then from nitrites into nitrates. Ammonia is extremely toxic to your fish and will kill them very quickly with much less than one part per million in your aquarium.

There are several methods for cycling. This is a method that is very effective, easy to do even for beginners and does not subject any live creatures to the potentially deadly cycling process. First, set up your aquarium with filtration, heater, aerator, etc. and fill with water. Add whatever de-chlorinator you prefer; if you’re not sure what’s in your water be sure you use a treatment that eliminates or neutralizes chlorine, chloramines and potentially harmful metals. With the filter running, add a tiny amount of fish food…about one or two flakes. The food can be old, stale food that’s no good for feeding anymore — it’s only there to rot. As the food decomposes it will produce the ammonia that will feed the bio-bugs as they get established in your aquarium.

That’s it! Keep adding one or two flakes every day throughout the cycling process, then do a partial water change before you add fish. It’s safe to add fish when both ammonia and nitrites test at zero but there are nitrates in the tank to show that ammonia is actually being broken down. A full cycle takes 36 days to complete, though some hardier fish can be added after a couple of weeks as long as you keep a close eye on the water parameters.

Don’t want to wait 36 days? There are a few products on the market that can help speed up the process. There are bottled, refrigerated products such as Bio-Spira that can give the cycle a big boost by adding the bio-bugs directly (via a liquid) instead of having to wait for them to get established in the aquarium. The only problem I’ve found with those products is that you add them, it boosts the bacteria, and that’s the end of its use. One great cycle-time reducer is the EcoBio-Block. This product is a little more expensive than Bio-Spira, but you get a lot better value for your money.

To use the EcoBio-Block, rinse it off in some de-chlorinated water and then place it in the tank after the water has been treated and filtration is going. Make sure you set it somewhere near the aerator or below the flow of an HOB filter (the kind that hang on the back of your aquarium). The EcoBio-Block has the beneficial bacteria the aquarium needs sealed into it; the flow of water facilitates the dissolving of the seal and ensures that the bio-bugs get the oxygen they need. These blocks can take a couple of weeks to start working (though sometimes they work much faster), and once it’s working you’ll be able to begin adding the fish you want, hardy or not, because this effectively finishes the cycle. Test your water; it may not be necessary to do a partial water change before adding fish unless there’s an excess of decomposed fish food in the bottom. Don’t take the block out! The EcoBio-Block is still useful for about 1 1/2 to 2 years; it’ll keep the bio-bug population healthy and contains all the trace minerals that normally have to be replenished through water changes. The minerals are time-released into the water to keep it healthy without constant water changes.

In short, the cycling process is simple but time-consuming. If you decide to shorten the cycle time take care with which product you purchase to help, there are a lot on the market that don’t actually do what you need. The above have proven to be good, reliable products that greatly aid with this process. Once you’ve achieved a good biological filter and the nitrogen cycle is up and running, you can start adding the fish!

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